Example of using package context with HTTP Middleware in Golang

Run the server:

$ go run main.go

In another terminal cURL the endpoint:

$ curl localhost:8080 -H "X-Request-Id: UNIQUE_REQ_ID"
Hello request: UNIQUE_REQ_ID, from 127.0.0.1

This codebase was heavily inspired by the following blog posts and repositories:

• http://www.alexedwards.net/blog/making-and-using-middleware
• https://joeshaw.org/net-context-and-http-handler/
• https://github.com/alexedwards/stack